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<TITLE>JavaScript Source Code 3000:  Forms:  Validation</TITLE>
<META HTTP-EQUIV="JavaScript Source Code 3000" CONTENT = "no-cache">
<META NAME="date" CONTENT="2000-09-09">
<META NAME="channel" CONTENT="Web Developer">
<META NAME="author" CONTENT="JavaScript Source Code 3000">
<META NAME="section" CONTENT="Forms">
<META NAME="description" CONTENT="Let Javascript help you receive feedback from your visitors.  The script also requires that all fields must be completed before the form is submitted.  Great!">

<SCRIPT LANGUAGE="JavaScript">




<!-- Begin
function checkFields() {
missinginfo = "";
if (document.form.name.value == "") {
missinginfo += "\n     -  Name";
}
if ((document.form.from.value == "") || 
(document.form.from.value.indexOf('@') == -1) || 
(document.form.from.value.indexOf('.') == -1)) {
missinginfo += "\n     -  Email address";
}
if ((document.form.website.value == "") || 
(document.form.website.value.indexOf("http://") == -1) || 
(document.form.website.value.indexOf(".") == -1)) {
missinginfo += "\n     -  Web site";
}
if(document.form.comments.value == "") {
missinginfo += "\n     -  Comments";
}

if (missinginfo != "") {
missinginfo ="_____________________________\n" +
"You failed to correctly fill in your:\n" +
missinginfo + "\n_____________________________" +
"\nPlease re-enter and submit again!";
alert(missinginfo);
return false;
}
else {
alert("Your form would have been submitted now, but this is just a demo.");
return false;
   }
}
//  End -->
</script>
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<A HREF="../index.htm" /" TARGET="_top"><FONT COLOR="#0000FF"><b>Home</b></font></A>
<img src="../img/arrow.gif" /img/arrow.gif" height=13 width=7 border=0 alt="}">
<A HREF="index.htm" /forms/" ><font color="#FF0000"><b>Forms</b></font></A>
<img src="../img/arrow.gif" /img/arrow.gif" height=13 width=7 border=0 alt="}">
<FONT COLOR="#006666"><b>Validation</b></font></font>
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<!-- Description --><!--content_start-->
Let Javascript help you receive feedback from your visitors.  The script also requires that all fields must be completed before the form is submitted.  Great!
<hr>
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<!-- Demonstration -->
<form name=form method=post onSubmit="return checkFields();">

<input type=hidden name=to value=''>
<input type=hidden name=subject value="Freedback">

<pre>
Name:      <input type=text name="name" size=30>

E-mail:    <input type=text name="from" size=30>

Web Site:  <input type=text value="http://" name="website" size=30>

Comments:  

<textarea rows=3 cols=40 name="comments"></textarea>

<input type=submit name="submit" value="Submit Form!">
</pre>
</form>
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<P>
<a name="source">
<table BORDER=0 WIDTH=486 CELLPADDING=3 CELLSPACING=0>
<tr><td BGCOLOR=yellow><font FACE="helvetica,arial,geneva"><b>JavaScript Source Code 3000:  Forms:  Validation</b>
<p>Simply click inside the window below, use your cursor to highlight the script, and copy (type Control-c or Apple-c) the script into a new file in your text editor (such as Note Pad or Simple Text) and save (Control-s or Apple-s).  The script is yours!!!
<br><br></font></td></tr>
<tr><td BGCOLOR=yellow ALIGN=CENTER>
<form NAME="copy">

<DIV align="center">
<input type=button value="Highlight All" onClick="javascript:this.form.txt.focus();this.form.txt.select();">&nbsp;&nbsp;&nbsp;&nbsp;
<INPUT TYPE="text" NAME="total" VALUE="Script Size:  1.94 KB" size=24>

</DIV>
<textarea NAME="txt" ROWS=20 COLS=75 WRAP=VIRTUAL>

&lt;!-- TWO STEPS TO INSTALL VALIDATION:

  1.  Copy the coding into the HEAD of your HTML document
  2.  Add the last code into the BODY of your HTML document  --&gt;

&lt;!-- STEP ONE: Paste this code into the HEAD of your HTML document  --&gt;

&lt;HEAD&gt;

&lt;SCRIPT LANGUAGE="JavaScript"&gt;

&lt;! &gt;
&lt;! &gt;

&lt;!-- Begin
function checkFields() {
missinginfo = "";
if (document.form.name.value == "") {
missinginfo += "\n     -  Name";
}
if ((document.form.from.value == "") || 
(document.form.from.value.indexOf('@') == -1) || 
(document.form.from.value.indexOf('.') == -1)) {
missinginfo += "\n     -  Email address";
}
if ((document.form.website.value == "") || 
(document.form.website.value.indexOf("http://") == -1) || 
(document.form.website.value.indexOf(".") == -1)) {
missinginfo += "\n     -  Web site";
}
if(document.form.comments.value == "") {
missinginfo += "\n     -  Comments";
}

if (missinginfo != "") {
missinginfo ="_____________________________\n" +
"You failed to correctly fill in your:\n" +
missinginfo + "\n_____________________________" +
"\nPlease re-enter and submit again!";
alert(missinginfo);
return false;
}
else return true;
}
//  End --&gt;
&lt;/script&gt;
&lt;/HEAD&gt;

&lt;!-- STEP TWO: Copy this code into the BODY of your HTML document  --&gt;

&lt;BODY&gt;

&lt;form name=form onSubmit="return checkFields();"&gt;

&lt;input type=hidden name=to value='you @ your domain . web'&gt;
&lt;input type=hidden name=subject value="Freedback"&gt;

&lt;pre&gt;
Name:      &lt;input type=text name="name" size=30&gt;

E-mail:    &lt;input type=text name="from" size=30&gt;

Web Site:  &lt;input type=text value="http://" name="website" size=30&gt;

Comments:  

&lt;textarea rows=3 cols=40 name="comments"&gt;&lt;/textarea&gt;

&lt;input type=submit name="submit" value="Submit Form!"&gt;
&lt;/pre&gt;
&lt;/form&gt;

 

&lt;!-- Script Size:  1.94 KB --&gt;</textarea><br><font FACE="helvetica,arial,geneva"></font></td></tr>

</table>
</form>
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